61612635603 has 4 divisors (see below), whose sum is σ = 82150180808. Its totient is φ = 41075090400.

The previous prime is 61612635593. The next prime is 61612635631. The reversal of 61612635603 is 30653621616.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61612635603 - 2¹⁴ = 61612619219 is a prime.

It is a super-2 number, since 2×61612635603² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61612635683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10268772598 + ... + 10268772603.

It is an arithmetic number, because the mean of its divisors is an integer number (20537545202).

Almost surely, 2^61612635603 is an apocalyptic number.

61612635603 is a deficient number, since it is larger than the sum of its proper divisors (20537545205).

61612635603 is a wasteful number, since it uses less digits than its factorization.

61612635603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20537545204.

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 61612635603 in words is "sixty-one billion, six hundred twelve million, six hundred thirty-five thousand, six hundred three".